| Incidence of unilateral distal vertebral artery aplasia: evaluation by combining basiparallel anatomic scanning-magnetic resonance imaging (BPAS-MRI) and magnetic resonance angiography. | |
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MedLine Citation:
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PMID: 19412683 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: The incidence of a unilateral aplastic distal vertebral artery (VA) has been reported as 0.2% of cases on cerebral angiography. During our daily magnetic resonance (MR) examinations, however, we frequently encounter MR angiograms (MRAs) that do not demonstrate unilateral VA. The purpose of this study was to calculate the frequency of aplastic unilateral distal VA by MR images performed for asymptomatic people. MATERIALS AND METHODS: Over a time span of 1 year, 237 asymptomatic people (140 men, 97 women; ages 28-67 years, mean 54.4 years) underwent brain MRI during a "brain check-up examination" in our hospital. To identify an aplastic unilateral distal VA, we retrospectively compared three-dimensional time-of-flight MRA with basiparallel anatomic scanning (BPAS)-MRI which was designed for recognition of the arterial outer contour. RESULTS: Aplasia of the unilateral distal VA was confirmed in 11 persons (4.6%). According to our classification, hypoplastic distal VA in 12 (5.1%) and asymptomatic acquired unilateral distal VA occlusion was also proved in 2 (0.8%). CONCLUSION: We found that the frequency of aplastic unilateral VA was 4.6% in asymptomatic people using a combination of MRA and BPAS-MRI for assessment of an intracranial VA. |
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Authors:
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Kohei Morimoto; Morio Nagahata; Shuichi Ono; Hiroyuki Miura; Fumiyasu Tsushima; Hiroko Seino; Shinya Kakehata; Kiyoshi Basaki; Seiyu Uno; Yoshinao Abe |
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Publication Detail:
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Type: Journal Article Date: 2009-05-03 |
Journal Detail:
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Title: Japanese journal of radiology Volume: 27 ISSN: 1867-1071 ISO Abbreviation: Jpn J Radiol Publication Date: 2009 Apr |
Date Detail:
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Created Date: 2009-05-04 Completed Date: 2009-07-29 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101490689 Medline TA: Jpn J Radiol Country: Japan |
Other Details:
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Languages: eng Pagination: 151-5 Citation Subset: IM |
Affiliation:
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Department of Radiology and Radiation Oncology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan. koheim@cc.hirosaki-u.ac.jp |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Arterial Occlusive Diseases / diagnosis*, epidemiology Female Humans Incidence Magnetic Resonance Angiography / methods* Magnetic Resonance Imaging / methods* Male Middle Aged Retrospective Studies Vertebral Artery / abnormalities* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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